Fabriken vorm



Feb. 9 1926.

1,572,272 0. EINSLER AUTOMATIC MEANS FOR LETTING OFF STEAM FROM ACONTAINER HAVING IN IT A BOILING LIQUID Filed NOV. 25, 1924 PatentedFeb. 9, 1926.

UNITED STATES PATENT, OFFICE.

v OTTO EINSLER, OF LEVERKUSEN, NEAR COLOGNE, GERMANY, ASSIGNOR TOFARIBEN- FABRIKEN VORM. FRIEDR. BAYER AND 00., OF LEVERKUSEN, NEARCOLOGNE- ON-THE-RHINE, GERMANY.

AUTOMATIC MEANS FOR LETTING OFF STEAM FROM A CONTAINER HAVING IN IT ABOILING LIQUID.

Application filed November 25, 1924. Serial No. 752,263. I

To all whom it may concern:

Be it known that I, O'rr0 EINsLnR, a citizen of Germany, residing atLeverkusen, near Cologne, State of Prussia, Germany,

have invented new and useful Improvements Relating to Automatic Meansfor Letting Ofi Steam from a Container Having in It a Boiling Liquid(for which I have filed applications in Germany on August 22, 1923; inAustria on October 20, 1924; and in England on October 28, 1924), ofwhich the following is a specification.

This invention has for its obiect a means for automatically controllingan auxiliary steam outlet valve on the fall of pressure in a containerhaving in it a boiling liquid.

According to this invention a valve controlling member is connected tothe container by a branch pipe, the control member being such that itoperates to open the valve as soon as the pressure in the containerbecomes, with regard to the steam pressure 1n the steam outlet pipe,less than the critical low pressure, and operates to close the valve sosoon as the critical low pressure is exceeded.

The critical fall of pressure may be defined as that diiference ofpressure which may exist between the steam in the container D, and thatin the steam outlet pipe, without resulting in an excessive frothing ofthe liquid or in a portion of it being carried over or entrained in theescaping steam.

The invention is illustrated in the accompanying figure of the drawing.

Referring to this figure, b is a valve connected with the steam outletpipe 0 from a container d having in it a boiling liquid: 6 is a throttlemaintaining the velocitv of the steam at the liquid level constant whenthe steam pressure falls 01f. a is the means for controlling valve 6.

below this pressure limit, steam can pass through valve 6. When pressurein container cl comes above this critical relation, tube f movesautomatically in the direction shut and comes against abutment g andthen prevents a flow of steam through valve 1).

In combination with a vessel for containing boiling liquid, a mainconduit connected with the top of the vessel for withdrawing steamtherefrom, means in the said conduit a distance from the vessel.defining a permanent throttle, a by-pass connected to said conduit onopposite sides of the throttle and means responsive to the pressurewithin the vessel for controlling the flow of steam through the by-pass,said means being constructed and arranged to prevent flow of steamthrough the by-pass while the pressure within the vessel exceeds acritical limit, to allow unimpeded flow of steam through the by-passwhen the pressure within the vessel drops below a lower critical limitand to vary the resistance to the flow of steam through the by-pass forpressures in the vessel, between said critical limits.

In testimony whereof I have hereunto'set my hand.

OTTO EINSLER.

